Improvement in anti-frictional bushings



UNITED STATES PATENT OEEIoE.

FREDERIoK s. RUR OF BROOKLYN, NEW YoRK.

IMPROVEMENT IN ANTI-FRICTIONAL BUSHINGS.

Specification forming part of Letters Patent No. 137,415, dated April 1, 1873; application filed February 7, 1873.

To all whom it may concern.

Be it known that I, FREDK. S. BURR, of

' Brooklyn, county of Kings, State of New York,

have invented certain Improvements in Anti- Frictional Bushings, of which the following is a specification:

My invention relates to a new and Improved Method of Constructing Anti-Frictional Bushings; and consists in so holding the rollers of such bushings in place as to prevent possibility of contact one with the other, and at the same time to provide'a bushing that shall be much less expensive to construct and keep in repair; and, further, when repairs become necessary, much more cheaply, easily, and quickly repaired.

I will proceed to describe the construction and operation of my bushing.

In the accompanying drawing, Figure 6 is a side elevation of my bushing. Fig. 7 is an elevation of the edge. Fig. 4 is an elevation of side with the flange removed to show the construction of rollers and retaiui n g-st-rap. Fig. 5 is a section through the lineXX. Fig. 1 is an elevation of the retaining-strap. Fig. 2 is a plan of same, and Fig. 3 is a plan of the roller.

fastening ribs or cogs H the flange F is securely fastened to the box or body D. The rollers O C are made of suitable material and turned accurately all over and of proper size and length. These rollers may be, in number, from five to eight, and even greater latitude in size may be taken, but not with good re sults, and their diameters should be such that their sum will be some less than the circumference in which their centers travel when in place. This insures the prevention of contact one with the other. These rollers (l O are provided with a score or recess, B, turned down into their bodies, as shown in Fig. 3. The retaining-strap A is formed in proper way from suitable material, and is provided with as many recesses, E E, as there are rollers. These recesses are of size such that they fit loosely over the recess B in the roller 0, and their centers, circumferentially, are such that even spaces between each are obtained. The diameter of the line on which these recesses are formed is such that the rollers when in place shall accurately fill the box D.

I have thus described in detail the construction of my anti-frictional bushing.

I would say that in my invention I do not confine myself to a single strap and corresponding recess, as I may use two or even more.

I claim as my invention- I 'I he combination of the grooved rollers O O with the slotted or recessed retaining-strap A, substantially as and for the purpose hereinbefore set forth.

FBEDK. S. BUBR.

Witnesses:

J. S. BURR, ROBERT H. FLETCHER. 

